Instruction/ maintenance manual of the product T2-PAC Bryant
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Instal la tio n Instructio ns T2 - - P AC, T2 - - NAC T2 - -P HP , T2 - - NHP LEGACY t SERIE S THERMOS T A TS A07047 A07046 Legacy S eries Legacy S eries Pr ogram mab le Th ermos tat Non- - Pr ogramm abl e Th ermost at Designed and Assembl ed in the U.
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1 T ABLE OF CON TENTS P AGE SAFETY CONSIDERA TI ONS 2 ................................ INST ALLA TION CONSIDERA TI ONS 4 .......................... INST ALLA TION 5 ........................................... Step 1 — T herm ostat Lo catio n 5 .....
2 SAFE TY CONS IDE RA T IONS Read and foll ow manufacturer inst ructi ons carefull y . Fol low all local el ectri cal codes during inst all ation. Al l wi ring must confor m t o local and nati onal elect rical co de s. Impr op er wirin g or ins tallatio n ma y da ma ge th erm osta t.
3 INTRO DUCTIO N Bryant ’ s Legacy t Ser ies programmabl e thermos tats are wal l - -mounted, low - - v olta ge th erm osta ts whic h ma inta in roo m tem per atu re by co ntro lling th e operat ion of a heat ing and/or ai r condi tioni ng syst em.
4 INST ALLA TION CONSIDERA TIONS Models There a re four model s in the Legacy Seri es: programmabl e and non - -programmable, AC an d HP . M o de ls T2 - - P A C an d T2 - - NA C are d es ign ed for A C sys tem s, c on tro lling on e stage of cooling and one stage of heati ng.
5 INST ALLA TION Step 1 — Thermostat Location S Approxi mate ly 5 ft (1. 5m) fr om floor . S Close to o r in a freq uen tly u sed ro om , prefe rab ly on a n ins ide p artitio n - ing wa ll.
6 b. Di sconnect wir es from exist ing thermost at, one at a tim e. Be careful not to allo w wires to fall ba ck in to the w all. c. As each w ire i s disconnect ed, r ecord wir e color and t ermi nal marking.
7 A07153 Fi g. 1 - - Backp lat e Moun tin g 5. Dri ll f our 3/16 - - in. mount ing holes in wall wher e marked. 6. S ecure mounti ng base to w all w ith four s crews and anchors provided. T o avoid uni ntended bending of wal l plat e plas tic , al l four screw s and anchors must be u s e d.
8 7. Adjus t lengt h and rout ing of each wi re to r each proper t erminal and con- nector block on mounti ng base wi th 1/4 - -in. ( 6 mm) of ext ra wi re. St rip onl y 1/4 i n. of i nsulat ion fr om each wir e to prevent adjacent wi res from shor ting toget her when connected.
9 O/B - reversing valv e Y1 - Cooling Low Stage Rc - 24 VAC, from cooling equipment Rh - 24 VAC, from heating equipment W - Heating C - Common 24 VAC G - Fan Y/Y2 - Cooling High or Single Stage A09271 Fi g.
10 A07158 Fi g. 4 - - Attach Th ermos tat to Backp late 11. Close t hermost at assem bly making s ure pins on back of ci rcuit board align wit h sockets in connect or . 12. T urn O N power t o unit . When power i s appli ed, all di splay i cons are li t f or 2 seconds t o t est the display .
11 and thei r fact ory default setti ngs. N ot all numbers are used in the Legacy Ser ies because not all options are avail able in this ser ies - - and numbering is consist ent across the T1, T2, and T6 t hermostat li nes.
12 T o Ent er t he Co nfig ura ti on Mo de: Pr ess and hol d the F AN key f or about 10 seconds until t he displ ay changes so that only t wo pairs of digi ts are show ing.
13 Opt ion 03 - - Fah ren h eit/ Cent igrad e Selec tion s: F = Fahrenhei t — Defaul t is Fahr enheit. C = Cen tigra de . Sel ects temperat ure measurement unit s. Opti on 04 - - Fan (G) ON with W outpu t Selec tion s: OF = G no t en ergize d with W — This is d efa ult.
14 H — R eversi ng valve output (O/ W2/ B) i s ener gized when HE A T mode i s sel ected. C — R eversi ng valve output (O/W2/ B) i s ener gized when C OOL mode is s elected. Default is C. Opt ion 11 - - Mi nimum De adba nd Be tw ee n He a ting And Co o ling Selec tion s: 01 thr ough 06 — Defaul t i s 02.
15 Option 13 - - Ro om Air T emperature Offset Selec tion s: - - 5t o5 _ F— D e f a u l ti s 0 . Thi s option sel ects the number of degrees F to be added to the dis played temp er atu re to ca libra te or d elib era tely misc alib rate th e m ea sure d ro om temperat ure.
16 Option 1 8 - - Ba cklight C onfig urat ion Selec tion s: ON, OF — Default is OF . When ON i s sel ected and the thermostat is not batter y operated a low level conti nuous displ ay backlight is al ways on. W ith OF sel ected, the backl ight is only on for a short t ime after the door is opened or a key i s pressed.
17 Optio n 26 - - Minimum Co oling Setpoint Selec tion s: 52 _ Ft o9 0 _ F— D e f a u l ti s5 2 _ F. Set s the l owest cool ing set point avai labl e to the us er . Option 2 7 - - Ma ximum Heating Setpoint Selec tion s: 50 _ Ft o8 8 _ F— D e f a u l ti s8 8 _ F.
18 St ep 4 — Check T hermos tat Op eration The Le ga cy Ser ies the rmo sta ts hav e a b uilt - - in ins taller te st cap ab ility . Use it to check thermost at and equipment operat ion wi thout del ays or set point adjustm ents to forc e he atin g or co olin g .
19 Check li st 1. Run equi pment t hrough sever al heati ng and cooli ng cycles to ensure proper operati on. T o operate t he thermost at i n its normal operati ng mode, cons ult the O wne r ’ s Manu al. 2. If the equipment is to be left in operat ion, the s etpoint s, operati ng mode, and possi bly progr am schedule mus t be proper ly sel ected.
20 FEA TURE S AND ACCE SS ORIE S Home , A way , Slee p (pr ogrammabl e mode ls onl y) Thi s feature pr ovides thr ee button select ions whi ch select from three predetermi ned pair s of heat and cool setpoint s. In programmed versions, one of these t hree choices can be sel ected for any pr ogrammed peri od.
21 Door Swi tc h When the door is opened, the displ ay changes f rom i ts norma l oper ati on view . The lar ge temperatur e displ ay disappears so it wi ll be avai labl e for ot her user funct ions. If the door i s lef t open for 3 minut es, t he dis play rever ts t o normal oper ati on.
22 OPE RA TIO NAL AND CO NNECTI ON INFO RMA TI ON Rc/R h Co nn ectio ns For i nstal lat ions having a separat e 24V AC tr ansformer f or heati ng and cooling, the R connect ion can be separ ated int o two connect ions, one for each tr ansformer . T his allo ws isola tion b etw een th e two tra nsfo rm ers to be p res erv ed .
23 Minimum On Tim er Once the e quipment has been t urned on, it must r emain on for 3 minutes . A change in m od e o r se tpo int will c an ce l this time r . Cycle T im er Based on the sel ection of 2, 4, or 6 cycles per hour , t his ti mer is set t o 30, 15, or 10 minut es.
24 T a ble 1 – Out puts Equi p Conf ig Tst a t Model COOL STG 1 COOL STG 2 HEAT STG 1 HEAT STG 2 HEAT STG 3 EM HEAT SS AC Opt 1 = AC T 2 --- P A C T 2 --- N A C T 2 --- P H P T 2 --- N H P Y --- ---.
25 WIRING DIAG RAMS * * C wire not needed for batteries ** Remove jumper when using split power (Indoor and Outdoor units utilize separate transformers).
26 WIRING DIAG RAMS (cont. ) * * C wire not needed for batteries ** Remove jumper when using split power (Indoor and Outdoor units utilize separate transformers).
27 WIRING DIAG RAMS (cont. ) Single-Stage Single-Stage Therm ostat Furnace Air Conditioner O/B Heat W W Y/Y2 Y Y Fan G G 24VAC Hot Heating Rh R 24VAC Hot Cooling Rc R * 24VAC Comm on C COM COM Cool * Indicates connection may not be required/available.
28 WIRING DIAG RAMS (cont. ) Furnace Air Conditioner Heat Stage 2 O/B W2 Heat Stage 1 W W/W1 Cool Stage 1 Y1 Y 1 Cool Stage 2 Y/Y2 Y/Y2 Y/Y2 Fan G G 24V A C Hot Heating Rh R R 24V A C Hot Cooling Rc DHUM 24V A C Comm on C COM C Y1 Thermostat (NA) * * Remove jumper when using split power (Indoor and Outdoor units utilize separate transformers).
29 WIRING DIAG RAMS (cont. ) Furnace Heat Pump O RVS Cooling O/B W2 Heat Stage 3 (furnace) WW / W 1 W 2 * Heat/Cool Stage 1 Y1 Y1 Heat/Cool Stage 2 Y/Y2 Y/Y2 Y /Y2 Fan G G 24V A C Hot Heating Rh R R 24V A C Hot Cooling Rc DHUM 24V A C Comm on C COM C Y1 ** * Some heat pumps may designate W1.
30 WIRING DIAG RAMS (cont. ) Fan Coil Air Conditioner O Remove J2 Jumper for heat staging Heat Stage 2 O/B W2 Heat Stage 1 W W 1 Cool Stage 1 Y1 Y1 Y1 Cool Stage 2 Y/Y2 Y/Y2 Y2 Fan G G 24V A C Hot Hea.
31 WIRING DIAG RAMS (cont. ) Fan Coil Heat Pump OO RVS Cooling O/B W1 W1 Heat Stage 3 W W 2 Heat/Cool Stage 1 Y1 Y1 Y1 Heat/Cool Stage 2 Y /Y2 Y/Y2 Y/Y2 Fan G G 24V A C Hot Heating Rh R R 24V A C Hot Cooling Rc 24V A C Comm on C C C Thermostat *Remove jumper when using split power (Indoor and Outdoor units utilize separate transformers).
32 THE RMOS T A T CONFIG URA TI ON RECO RD In staller _________________________ Model Number _____________________________ Date _______________________ A.
33 E. Conf iguration Op tions Op tion 01 ____ Equipm en t T ype Op tion 03* ____ Fahr enh eit/Ce ntig rade Sele ction Op tion 04 ____ Fa n (G) on wit h W/W1 Select ion Op tion 07 ____ Zoning Op tion 1.
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Copyright 2012 Bryan t Corporation 7310 W Morris St. I ndianapolis, I N 46231 I I T 2 --- P A C --- 0 5 R e p l a c e s : I I T 2 --- P A C --- 0 4 Edition Date: 05/ 12 Manufa cturer reserves the right to change , a t any time, specif ica tions a nd de signs without notice and wi tho ut obl ig ati o ns.
An important point after buying a device Bryant T2-PAC (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bryant T2-PAC yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bryant T2-PAC - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bryant T2-PAC you will learn all the available features of the product, as well as information on its operation. The information that you get Bryant T2-PAC will certainly help you make a decision on the purchase.
If you already are a holder of Bryant T2-PAC, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bryant T2-PAC.
However, one of the most important roles played by the user manual is to help in solving problems with Bryant T2-PAC. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bryant T2-PAC along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
